Sand-tempering machine.



C. F. ROUSH & H. GARNETT.

SAND TEMPERING MACHINE.

APPLICATION FILED JUNE 5, 1912.

4 SHEETS-SHEET 1.

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Patented June 17, 1913.

G. P. ROUSH & H. GARNETT.

SAND TEMPERING MACHINE APPLICATION FILED JUNE 5,1912.

Patented June 17, 1913.

4 SHEETSSHEET 2.

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G. F. ROUSH & H. GARNETT.

SAND TEMPERING MACHINE.

APPLICATION FILED JUNE5, 1912.

1,064,995 Patented June 17,1913.

4 SHEETSSHEET 3.

4 SHEETSSHEET 4.

Patented June 17, 1913.

WITNESSES CHARLES E. noosn AND HERBERT GABN'E'M, or TOLEDO, oHIo, nssisnons OF ONE- TEIRD EEO-JOSEPH T. VALIQUETT, ONE-THIRD T0 EDWARD J.

ODONNELL, AND

ONE-THIRD T0 CHARLES E. ROUSH, ALL or TOLEDO, omo.

sAnD-rEnrEmne MACHINE.

Specification of Letters iatent.

Patented June 17, 1913.

Application filed June 5, 1912. I serial in. 701,874.

To all whom it may concern: p

Be it known that we, CHARLES F. Rotten, citizen of the United States, and HERBERT Giannini, a citizen of Great Britain, both invention, such as will enable others skilled in the art to which it appertains to makeand use the. same, reference being had to the accompanying drawings, andto the characters of reference marked thereon, which form a part of this specification. 1

Our invention relates to sand working machines, and particularly. to machines adapted for use in foundries, or other places where sand is employed as a molding medium, for mixing and acting on the sand after a molding operation to restore its temper and also to free it of small pieces of castings or other foreign matter, but is not restricted to such use as it may be employed in any connection for which it ma be adapted or appropriate.

The primary object of our invention is to improve upon the machine covered by United States Letters Patent No. 978,961, dated December 20, 1910, wh'ere'byto enhance the efficiency, practicability and commercial value of such machine.

The invention is fully described in the following specification, and while, in its broader aspect, it is capable of embodiment in numerous forms, a preferred embodi- Inent thereof is illustrated in the accompanying drawings, in which- Figure l is a top plan view of a machine embodying the invention with parts broken away and removed, Fig. 2 is a. side elevation thereof with parts broken away. Figs. 3 and 4 are front and rear end elevations thereof respectively. Fig. 5' is a perspective view of the mixing drum adjusting mechanism. Fig. 6 is a rear elevation of the sifter means in association with the elevator casing, and Fig. 7 is a cross-section of the sifter means on the line m, w in Fig. 6.

Referring to the drawings, A and B designate the rear and front sections respectively, of the maln frameof the machine,

and are hinged together at their adjoining ends, as at I, to permit a vertical swinging V adjustment of one section relative to the other. The rear section. A is shown as having the single beam 2 on one side and thetwo spaced beams 2 and 2* on the other side which three beams are connected at their rear ends by the cross beam 2, while the front section B has side beams 3, 3? and 3", which are pivoted at their inner ends to and form extensions of the respective beams 2, Q and 2 of the rear section, and are connected at their front ends by the cross beiifil The rear frame section A is supported at its forward end by traction wheels 4, 4;, which are mounted. on an axle 5 attached to such section, and the rear end of such section is supported by steering wheels 6,6 each. shown, in the present instance, as belng attached in a suitable manner to the front piece of a rectangular frame 7, which is so ported above the main frame section A y standards 8 and 9. The frame 7 is intended to support the motor (not shown) of the machine, the drive shaftof which is indicated at 10 and connected by a set of gears 11 to a shaft 12, which is mounted u on the frame 7 transversely thereof. The s aft 12 has connection through the medium of a set of spur gears 18 with a subjacent shaft 14c,

pair of sprocket-wheels 15, which are in driving connection with sprocket-wheels 16 on the axle 5 through the medium of sprocket chains 17. As this mechanism forms no part of the present invention, but is merely illustrative of a means of impartin tractor movements to the machine, it will not be specifically described.

A sand-elevating wheel 18 is carried by the front frame section B, preferably substantially midway of its ends, by standards 19 and 20 rising from opposite sides thereof, the standard 19 supporting the hollow hub ortion 21 provided at one end of the wheel. The other end of the wheelor that adjacent to the standard 20 has its centralv portion open and is supported in properly adjusted position by a peripherally grooved idler wheel 22 the groove of which receives the inner rim edge of the adjacent wheel side, as best shown in Fig. 2. A, pair of idler wheels 23 are carried by spindles projecting inwardly from the idler beam 3 of the frame section B and coiiperate with the wheel 22 in guiding the rotary movements of the elevatin wheel 18. The elevating-wheel 18 is provided around its peripheral portion with a plurality of equidistantly spaced lifting blades 24, which are preferably spirally arfalls inwardly therefrom by gravity and drops upon a griddle or screen which is mounted within the elevating-wheel for longitudinal reciprocatory shaking movements therein. This griddle, which is best shown in Figs. 1, 6 and 7, preferably comprises a frame 25 having a screen 26 stretched across the same, and havin a trough 27 suspended from its bottom e ges and declining from the inner end of the screen frame, or that adjacent to the closed end of the elevating-wheel, with its opposite end projecting without the open end of the wheel and through the standard 20, which is forked for such purposes, and terminates in a transversely-disposed forwardly declin ing trough 28. The nose of the trough 28 enters a boot or receiving opening 29in the rear side of the lower endportion of .an elevator, housing 30 in which a chain and bucket elevator operates, the opening 29 being of suitable size to permit the trough to have free shaking movements therein with the griddle. The shaking of the griddle or sieve causes the sand to sift therethrough and fall into the trough 27 by which it is conveyed to the trough 28 and thence into the elevator housing 30, and the tailin s from thesand, which tailings may inclu e.

small pieces of castings or other foreign matter that is too large to pass through the mesh of the screen, pass over the outer end of the screen into a trough 31" which is disposed transversely of the screen'end without the open end of the elevating wheel. This trough is disposedover a portion at least of the trough 28, and has the portion of its bottom above such trough perforated to permit any sand which has fallen therein to sift through such perforated bottom into the trough 28. The outer or delivery end of the trough 31 projects laterally of the trough beyondtheinner end portion of the trough 28 and has its bottom imperforate to prevent a further sifting of sand therethrough. The outer or delivery end of the griddle is transversely restricted, as at 32, to enable it to pass around the rear side of the elevator housing 30, and the inner end of such frame is forked, as shown at 33, to enable it to fit around the inwardly projected end of the wheel hub 21. I

The outer end of the griddle frame may from the adjacent side beam section 3, as

shown in Figs. 2 and 6, while the inner end of the griddle may be carried by a rod 35,

which has a bearing in and projects outwardly through the wheel hub 21. The outer end of the rod 35 is attached without the hub .21 to one arm of a bell-crank 36, which is mounted in the standard 19 and has its other arm connected by a rod and strap to an eccentric 37 on a shaft 38, which is mounted in suitable bearings 38 on the inner end portion of the frame section B. It will thus-be seen that a shaking movement will be imparted to the griddle from a rotation of th'e'shaft 38.

The shaft 38 carries a sprocket-wheel in connection, through the medium of a chain 39, with a sprocket-wheel on the shaft 12, and also carries a sprocket-wheel in connection, through the medium of the sprocket chain. 40, with a .sprocket wheel 41 on a shaft 42, such shaft; being mounted transversely of the machine in advance of the elevatingwheel 18 in theupp'er ends of standards 43 rising from the front end of the frame section B. The shaft 42 ,serves as a drive shaft for the elevating wheel 18 andfor such purpose has small sprocket wheels thereon in connection with large sprocket-wheels on the ends of the elevating wheel through the medium of sprocket-chains 44. The shaft 42- also has one end connected through a set of gears 45 to a shaft 46, which is mounted in the forward portions of the standards 43 below the plane of the shaft 42 and carries a sprocket-wheel 47 in connection, through a sprocket-chain 48, with a sprocket-wheel 49 on a shaft 50, which connects and is journaled in bearings attached to .the under sides of the beams 3 and 3 The shaft 50 carries a second sprocket-wheel, which is connected by a sprocket-chain 51 to the sprocket-wheel on the adjacent end of the shaft 52 of a drum 53. The drum 53 has its shaft ends journaled inbearing arms 54, which pivotally attach at their forward ends to the under sides of the beams 3 and 3 in axial aline-" ment with the shaft 50, one armbeing carried by such shaft, thus enabling the drum to have swinging adjusting movements rela-.

tive to the bears 3, 3. The dru'm 53is preferably provided on its periphery with a plurality of cutting-blades-55, which are so arranged as to cause them toeffect a thorough-mixing and workingof the sand assed over to restore its tem er rior to p being elevated by the wheel 18, as more fully described in saidprior Patent No. 978,961.

I The forward or free end-portions of the drum carrying arms 54- are connected by links 56 to arms-57 extending upwardly and rearwardly from a rock-shaft 58,.which connects and is mounted in the lower front pertion of the bearing standards 43., and such shaft has an arm 59 at one end thereof in connection, through the medium of a link 60, with a control-lever 6 1 which is fulcrumed to the for-ward end of the beam 7- and has a handrcontrolled lock means for engaging a toothed sector 62, as best shown in Fig. 5,, thus adapting the raising and loweringmovements of the arms 5.4 and attached drum to be controlled by movements of the lever 61.

The purpose of hinging the front-frame section B to the rear frame section A is to enable the elevating-wheel. 18. to. be raised or lowered relative tov the surface over which it is operating so. that more or less of the sand over which the Wheel passes may be elevated thereby, or that the wheel may be elevated to inoperative position when the machine is being transferred from one 'place to another. To accomplish such raising 0r lowering of the front frame section and associated par-ts, we attach draft cables 63 to the upper ends of the standards 19' and 20., which are extended for such purpose, and connect the rear ends of such cables to registering drums 64 on a shaft 65, which is mounted in the upper extended endsof the frame standards 9, 9, as best shown in Fig. 2. The shaft 65 carries a worm wheel 66 in mesh with a worm 67, the shaft 68 of which is suitably journaled in the machine frame 7 and carries at its rear end a friction bevel-wheel 69 between the beveled faces of two bevel friction wheels 70 on the shaft 12. The bevelwheels 70 are connected by a sleeve and feathered to the shaft 12 to adapt them to turn therewith and also to be moved to place one or the other into engagement with the wheel 69 or both in neutral positions, their shifting movements being controlled by a shift-lever 71, see Fig. 1.

The elevator housingSU is carried by the frame section B at one side of its forward end and incloses any suitable form of. chain and bucket elevating means, as shown by dotted lines in Fig. 1, such means being guided by sprocket-wheels carried by lower and upper shafts 72 and 73, respectively, in the housing, the upper one of which carries a sprocket Wheel 74: without the inner side of the housing, which sprocket-wheel is connected by a sprocket-chain 75 to a sprocketwheel 76 on the shaft 46. The upper end of the housing 30 isprovided with a deliverypipe 77 into which the sand is dumped by the elevating means. The pipe 77 may extend to any desirable point of discharge.

In the operation of our improved machine, it is run over the surface on which the sand to be acted on is disposed, the sand being first moistened to the desired extent, The drum 53 is intended to first move into contact with the sand and the blades 55 thereon, if the drum is provided therewith, act upon the sand to effect a thorough mixing and working of the same to restore its temper prior to throwing it back toward the elevating wheel 18. As the machine advances the blades 24 of the revolving wheel 18 scoop the sand from the floor or other surface on which it may be disposed and elevate it to a point where it may fall by gravity from the inner edges of the blades upon the griddle or screen 26 disposed within the wheel. The vibrating movement of the griddle, which is imparted thereto by reason of its connection with the eccentric 37, causes the sand to be sifted through the screen into the trough 27 by which it is delivered to the trough 28, which in turn delivers the sand into the lower portion of the elevator housing 30. The tailings from the sand pass endwise from the screen or griddle onto the perforated portion of the trough 31, and thence are discharged rearwardly from such trough into a box or other suitable receiving agent (not shown) that may be carried by the machine. The sand which is delivered into the housing 30 is elevated by the elevating means therein and discharged through the delivery-pipe 77 to any desired point. If it is desiredto raise the elevating wheel 18 from its lowered position for the purpose of transferring the machine from one pointto another or for any other purpose as desired, the cables 63 are shortened by a driving of the shaft 65 in the proper direction, thus effecting a lifting of the front main frame section B upon its axis 1. The drum 53 is also capable of being adjusted relative to the frame section B by a movement of the control lever 61, by means of which, and the connecting mechanism, the hinged drum-carrying arms 54 may be raised or lowered as desired. To operate the shaft 65 it is only necessary to throw one or the other of the friction-wheels 70, which arecarried by the drive-sha ft 12, into driving engagement with the friction wheel 69, as the desired direction of rotation of the shaft 65 may require, thus communi- .wheeled frame having a vertically adjustable part, and an elevating wheel and a mixing member carried by said part for adjustment therewith.

2. In a machine of the class described, a frame having a vertically adjustable part, a hollow elevating wheelcarried by said part for adjustment therewith, and screening means carried Within the Wheel and operable to screen and deliver material to a predetermined point.

3. In a machine of the class described, a frame having a Wheeled section and a section attached to the Wheeled section for vertical adjustment, means carried by the adjustable section, for elevating and clean ing sand or similar material, and means carried by the Wheeled section and operable to vvertically adjust the adjustable section.

4. In a machine of the class described, a frame having a Wheeled section and a vertically adjustable section in hinged connection, a rotatable material elevating Wheel carried by the adjustable section, and means carried by the Wheeled section and operable to effect an adjustment of the adjustable section.

5. In a machine of the class described, a set of rotatable members arranged one in advance of the other and rotatable in opposite directions, one member serving to Il'llX sand over which it passes and the other serving to elevate the mixed sand, and means for adjusting one of said members relative to the other.

6. In a machine of the class described, a sand elevating Wheel and a sand mixing member rotatable in opposite directions, and means carrying the mixing member for vertical swinging adjustment relative to theelevating wheel.

7. In a machine of the class described, a frame having a vertically adjustable part, an elevating member carried by said part, a drum, and means swingingly attaching said drum to the frame part.

8. In a machine of the class described, a frame having a vertically adjustable part, a rotatable elevating member carried by said part, arms swingingly attached to said part, a drum carried by said arms, and means connecting said arms and part for relatively adjusting the same.

9. In a machine of the class described, a vertically adjustable frame part, arms pivotally attached to such part, a drum carried by said arms, and means connecting the frame and arms and operable to relatively adjust said arms and part.

10. In a machine of the class described, a

frame, a set of oppositely rotatable sand Working members both mounted for vertical adjustment relative to said frame and being relatively adjustable.

11. In a machine of the class described, a frame, a set of rotatable members arranged one in advance of the other and mounted for vertical movements relative to the frame, one of said members being swingingly adjustable relative to the axis ofthe other member.

12. In a machine of the class described, a frame, a sand elevating Wheel carried thereby, a griddle mounted Within the Wheel to receive sand elevated by the Wheel, said griddle having a screen and a subjacent trough portion, said screen terminating at one end in a transversely disposed tailing delivery trough and said subjacent trough terminating at one end ina transversely disposed sand delivery trough Which is subjacent to a portion of the tailing trough, means for receivin sand from said sand delivery trough and conveying it to a predetermined point, and means for imparting vibratory movements to the griddle.

In testimony whereof, We hereunto sign our names to this specification in the presence of two subscribing Witnesses.

CHARLES F. ROUSH. HERBERT GARNETT.

Witnesses C. 'W. OWEN, S. T. Know. 

